/Engine/Source/Runtime/Engine/Classes/Particles/RotationRate/ParticleModuleMeshRotationRate.h
class UParticleModuleMeshRotationRate : public [UParticleModuleRotationRateBase](API\Runtime\Engine\Particles\RotationRate\UParticleModuleRotationRateBase)
FRawDistributio...
StartRotationRate
Initial rotation rate, in rotations per second. The value is retrieved using the EmitterTime.